Moving current year tax data to a new computer

Hi - I bought a new computer and have installed TurboTax on it. I backed up a copy of my 2020 tax return (using "Save As") onto a thumb drive and am trying to upload it to my new computer.  When I Browse for my return on my computer it won't recognize the file because it isn't a (*.pdf  or a *.tax2019) file.  It appears to only be looking for 2019 files.  Any ideas on how I can get my current return onto my new computer before my old one dies? Thanks!!!